Pipe-cutting wrench.



H. E. CREAMER.

PIPE CUTTING WRENCH. APPLICATION FILED MAY 27. 1916.

1,215,623. Patented Feb. 13, 1917..l

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R. E. CREAMER.

PIPE CUTTING WRENCH.

APPLICATION FILED MAY 21, 1916.

R. E. CREAMER. PIPE CUTTING WRENCH.

APPLICATION FILED MAY 2, |916.

1,21 5,623. Patented Feb. 13, 1917.

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y lun E 'y am@ ROBERT E. CREAMER, OF WORCESTER, MASSACHUSETTS. 1

PIPE-CUTTIN G WRENCH.

Specification of Letters Patent.

Patented Feb. 13, 1917.

Application led May 27, 1916. Serial N o. 100,334.V

To all whom t may concern:

Be it known that I, ROBERT E. CREAMER,

a citizen of the United States, residing at Worcester, in the county ofWorcester and State of Massachusetts, have invented a new and usefulPipe-Cutting Wrench, of which the following is a specication.

This invention relates to a pipe cutting wrench and particularly tomeans for operating the cutting disk of the wrench.

The object of my invention is to provide a simple and eiiicient meansfor moving one of the cutting disks inwardly and outwardly within thewrench occupying a minimum amount of space and the least possibleexertion on the part of the operator.

With these and other objects in view my invention consists in a novelcombination and arrangement of parts hereinafter described and morespeciically pointed out in the appended claim.

In the accompanying drawings I have shown my invention sufiiciently toenable those skilled in the art to understand the construction andoperation thereof.

Referring to the drawings Figure 1 is a side view ofmy improved pipecutting wrench; in this view a portion of the frame is broken away.

Fig. 2 is a view corresponding to Fig.' 1, but shows some of the partsin a different position.

Fig. 3 is a sectional plan view taken on line 3-3, Fig. 2, viewing indirection of arrow a, same figure.

Fig. 4 is a detached plan view of the cutter slide, operating screw andconnecting parts; in this view the slide is shown in section, and

Fig. 5 is a detail view of the wrench operating handle.

In the accompanying drawings 10 is the main frame having slidablymounted therein a dovetail slide member 11; said slide 11 has secured inthe upper portion thereof a stud 12, uponwhich is loosely mounted thecutter disk 13. A

A lead screw 14 is loosely mounted in suitable bearings in the frame 10,said screw 14 being retained in its horizontal position by means of thescrew 15 mounted in the frame 10, the inner end of said screw 15engaging a recess 14a in the screw 14.

The screw 14 has formed therein right and left hand threads 16 and 17,said threads 16 and 17 engaging the screw collars 18 and 19respectively.

Secured in man upwardly extending projectlon 18a, of the collar 18 is astud 20 upon which is loosely mounted one end of a connector 21; theopposite end of said connector 21 is loosely mounted on a stud 22secured in the slide 11.'

Secured in an upwardly extending projection 19a, of the collar 19, is astud 23 upon which is looselymounted one end of a connector 24, theopposite end of which is loosely mounted on the stud 22 secured in theslide 11.

A bevel gear 25 is secured on the screw 14, said gear 25 meshing with alike gear 25 secured on a stud 27 mounted in a suitable bearing 10a ofthe frame 10.

Loosely mounted on studs 29 and 30, secured in the frame 10, are thedisk cutters 28 and 28a.

I have provided a socket wrench 31 having a square opening 31a in oneend thereof; the opposite end 31b of said wrench being square in crosssection to engage like openings 10b in the frame 10.

I will now briefly describe the operation of the above mentioned partsThe frame 10 which is of C shape is placed over the pipe A, the squarerecess 31a of the wrench 31 is then applied to the most convenientsquare end 14a or 27a, the screw 14 is then revolved thus causing thescrew collars 18 and 19 toY travel toward each other, this, as willreadily be seen, through the connectors 21 and 24, forming a toggle,will cause the slide 11 to be carried upwardly until the cutting disks13, 28 and engage the periphery of the pipe, see

The frame 10 is then revolved around the pipe by means of wrench beingused as a lever, the end 31=L being applied to the square ends 14a and27a or the opposite end 31b of the wrench 31 being inserted into theopenings 10" of the frame 10 as it is revolved about the pipe A.

At intervals the screw 14 is revolved as above described, causing thedisks 13, 28 and 29 to engage deeper into the body of the pipe A, seeFig. 2, and the operation repeated until the pipe is severed.

It will readily be seen and appreciated by those skilled in the art thatI have provided a simple and efficient device by which a pipe may besevered as for instance to sever a pipe at a desired point that isalready installed in a trench where the working space is limited.

Having thus described my invention it is evident that certain changesand modifications may be made therein by one skilled in the art withoutdeparting from the spirit and scope thereof, therefore, I do not wish tobe limited to the specic details herein disclosed, but what I claim is:

A pipe cutter of the type described, including a carrying frame havinglan arm equipped with rotary cutters and opposed to, and spaced from thebase of said carrying frame, a driven right and left hand threaded screwhaving bearings in said frame, a slidable member positioned in saidcarrying frame, opposite the cutter-equipped arm of said carrying frame,and equipped with a rotary cutter arranged with respect to the cuttersof said arm, collars having threaded connections with said right andleft lia-nd threaded screw, and pivoted-together toggle-link connectionbetween said collars, the pivot between the links of the latterconnection also pivoting` in said slidable cuttercarrying member, and ascrew and annular recess connection between said carrying frame and saidright and left hand threaded screw.

In testimony whereof I have hereunto set my hand, in the presence of twosubscribing witnesses. Y

ROBERT E. CREAMER. Witnesses:

ERNEST R. LrJiwELLYN, CHARLES S. WEBSTER.

Copies of this patent may be obtained rfor ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

